Apparatus for conveying pulverulent, broken, or like materials



G. H. STRAIN Aug. 3, 1943.

APPARATUS FOR CONVEYING PULVERULENT, BROKEN, 0R LIKE MATERIALS Fil edJuly 9, 1940 2 Sheets-Sheet 1 N InvenZbr 6 fidrry J'Z'znim 9L ##ormggs aar 3, 1943. G. STRAIN 2,325,715

APPARATUS FOR CONVEYING PULVERULENT, BROKEN, OR LIKE MATERIALS FiledJuly 9, 1940 2 Sheets-Sheet 2 [1V VLF/VIZ- 0/? George Heir/ u Si'raiILrateredates.- 9 '3 V .rigid member areciprocating "r'noti'on havingilavertical component, and iayscree'n mounted on the 1 mally heldin, ornearly in, contact with the-frigid i force away fromtthe position ofcontact. '1 f: N;

, 1 i The present invention is based; on" the tobserva negligible; H r I,h p

n The action of thema chineis similar-"to that 1" described "in us:Patent No.2;192;66&; the ahvn carries the 'traywith it in onegstrolte,andon the z 'tarde'd, but the r'naterial can still be conveyed even ifthe angle of inclination of the'tray ap proachesthe angle of reposeoflthematerial.

or leaf Springs, bending-in the vertical plane jis insufficient to aclaims Iscreeni'ng apparatus "which: comprises a rigid member or anvil;means for imparting tothe rigid memberrin such? a manner that itwi'snormember byj'the forcefof one: 0l' 'II lQI QSDIiI1'gS bX' theirequivalent; but .isyi'ree ito move against such 1 tion that a machinefor conveying pulizemlent,

broken or like'rnateria1 isQcjbtained if ai itray"is mounted. (alongsidethe :rigid lmember in the aforesaid. manner and therigid; iriernberfisgiven 1 i v areciprocating" motion having a' componentparallel t0 thedirection inwhich the material i's to i beconveyed; this arrangementenabling the imof n manta of the apparatus totbeisubstantiallyyegual Vto the momenta ot the impact; thus rendering i extraneous vibrationseitherfno neexist t v return strokeT-the "tray lasbhind fthef anvil; andis stnick by fthe returning. anvilfat orfne'ar its point of maximumvelocity, thefmomenta'of anvil' h.

and tray substantially destroying one 5 another. At each I impact thejr'naterial fon the tray is lad Vancd .by i a certain distance; and isthusgradu an onveyed I1 .7 7 V @T e t m tiayiasusedhereinincludes so ensand other deviceshavingja surface'such thatjhe material re's ting i thereon can T'advan'lc'e "relatively $1 thereto when thetray is? subjecttome impacts o} I the-anvil. y l 1 The traymay be plane or of any otherdesired shapewhichpennits the material to advance over its surface, andmaybe horizontalor-inclined.

' It the tray slopesdownwa'rds in the directionof advanceof the materialthe speed of advance will f beincreased andthe material willbespmew'hatf separated at each impact fromthe tray, return ing to thelatter under-the actionof gravity. The latter effect is of advantage inscreening theme. terial, the tray being-'in-this in stance a screen;

V I1 the tray slopes upwardsin thedirection of advance ofth'e material,theadvance will be re- The traymay bef'mounted on thelanvil by wil Ifthe rigidity of the springs to hmmvshoh ooNvEYING PULvERii :h T, BROKEN,on LIKE MATERIALS enters-w. sexed ami K Application July a 194o,sei i31NdQsMsss' L I In aGreat Britain Augustg8m1939 ipl i isg 198-, 6

i h The invention is illustrated by way: ofrexarnple in the accompanyigidrawings in which-a; 4

accordinguto' the inventionglpi i A traywl is mounted alongside anaanvil 2by means OI'ICOiI springs {fixed atone end: to the anvil andsatthelother to bolts 'lpassing through alplate. 5 whichcissboltedr tostrutsL-S. pivoted on thelfixed membeis 1. Tlfiftraygis pivotallyabtacheato stile/struts sfibyr means pf bolts .3; which i throughperioratibns' in: angle plateg 9 -riveted to the screenand throughbearings I I 0 in the struts 6J The bp1bs 4 xare yh eld in position bywing-nuts l l which enable the periodicity- 0f the wwith'an Vreciprocate at a frequency; of,

, 'inii'riute' and j millimetre- "Ihee'nd's of the connecting rodsj'llremotefromthe eccentric l3 are pivotally mounted ymns in bearingsstruts-l 5 which are t an amplitude? 01E the ender of a themselvespivotaily nounted on-the member 11.

i Supporting the "endof'the" t yy mot from r m 'fii iot'a ati sh g f aT' f i? 1 ed-up'ordown; in Orderrto valfy the inclina Impact plates '18are fixe every oscillation. The plates l8 and anvil 2 are provided withrubber pads I9 to reduce the shockj o! the impact. i

"The material to be conv yed is fed'to the my I from a hopper 20 and ateach impact is adw vanced towards theright as seen in the drawingsi IThe tray is provided with Wing' 2| which sprinkle the material in awide; shallow stream to a deflecting plate 22 which deliversthejmaterialto any desired position. i I

i The invention overcomes the difliculty experi enced in conveyingmaterials, especially flocculent or cohesive materials, from a hopper orbin ervmaybelfurther supe ported by 'strutsand ties which permit it tomove freelywith andaway, from the anvil in 'a-substah itiallywhorizontaiiplane. The: struts and ties may .be usedfonadjusting;the inclination' of the tray.

et-resist sh; as described above, strike the anvil .2 once in r 1cm: or,1, a 1. Apparatus j for conveying pulverulent ;or broken material,whichocomprises arigid memf ber, a tray mounted alongside the rigidmember in such a manner that the tray or a member atmotion having acomponent parallel to the direction in which the material is to beconveyed, the

tached thereto is normally held in, or nearly in,

to the momentaof the impact. l V 2. Apparatus as claimed'in' clai 1,wherein the tray and the direction orfos'cillation'cf the rigid membersare substantially horizontal.

3. Apparatus as claimed in claim 1, wherein 20' r o, 7 ing horizontalreciprocation to said anvil; striker the tray' is suppo'rtedby a devicewhich enables theinclination of the tray to be adjusted- 4.Appajratus asclaimed ln claim"l', wherein the trayis supported by and/ordependszifrom rods to which the-tray pivotally attached and which arethemselves'plvotally rnounted onfixed oradjustable'bearings; I

a 5 Apparatus fa's clalmeddnrclalm 11,. "wherein the member which is.struck by the anvil 'is ifixed to one or more of the said rods,

6. Apparatus for conveying ipulverulentor broken materialcomprisingarigid member, a

tray mounted alongslde saidrigid member in 7' contact with the rigidmember by the force of" an elastic member butis free;tomovoagainst suchforce away from the position pf; contact. and

means for impartingto-therig'id membe a re-- tray and the direction-ofoscillation of the rigid memberbeing substantially horizontal, and supporting means for said tray, said supporting means being pivota'llymounted onbearings', said tray being pivotally attached'to'saidsupporting means. r v

a 8. Infan apparatus forlco nveyingpulverulent 10 or broken'material, ashallow, wide open tray,

.o-imeans forsuspending said tray for substantially "horizontalreciprocating motion, means indepen'd'ent of said tray and stationaryand having a delivery mouth close to the bottom of the shallow tr y fordelivering the material to the tray while 7 the tray moves therebeneathto distribute the material in a 'wide, shallow substantially uniformstream, an anvil also-mounted to reciprocate longitudinally inparallelism with the tray'and ada jaceht one en-d thereof, means forcommunicatmeans movable back and forthsubstantially horizontally withsaid tra'yand positioned tobe engagged and struck by said anvil and turnto reiact and. strike said anvil,.both impact blows tak mg, place in asubstantially horizontal direction for drawingsame yieldably together.

9. An apparatus according to claim 8, further characterized by the factthat said striker means I:

l is. carridby. links pivoted to the tray and to a such a manner thatthe tray ova-member.- attached thereto is normally'held infor nearly in,

elastic 'member', but is f freef'toj move againstsuoh force awa fromthepositionfoi contact;"me

for imparting to the rigid member areciprocating motion having a(:omponentparallel t0 thedirection in which the 'm terialis tobeecnveyed, said arrangementenablinsxthemomenta oi; the

'7. Apparatus for conveying- :pulverulent; or broken materia whichcompri es-a rigid member, a tray. mounted alongside Y the frigid. memberin such a manner that the traygor a member at;-

' tachedoth reto is normally held substantially in 7 con t fih't e ris-m mberby he fiq s of. an

elasticmember but i sff ree itc move against. such force away' from thepositionpf contact, means for imp rtin to the'rigid memberarec m ocatinor near theforward edge Y edsupp rtr I I 10. :An, apparatus accordin oclaim 8, in

which said yieldable means is in the form of coil adjusting the tensicnof springs, withmeans for said springs;

1'1.;.Apparatus= acc rding claim 8, wherein strutsare pivoted toaan endportion-of said tray and depend iromthe tray, means 'whereby' the lowerendsof said struts are pivoted tothe apparatus frame, and meanswhereby'said struts carry said-striker means. :1 V --12.LApparatusaccordins to' claim 8.; in which eccentrics are. mounted insubstantially horizon-V tal alinement with said anvil, and substantialhorizontallinks-are pivotedbetween said anvil and said eccentric.

' L 13. Apparatus according to claim' si further chara teri d? in thatthe tray converges toward a point at its delivery Lend :with'diagonalside edges, wings extending downwardly and iorwardly from said diagonaledges on which the material isgsprinklecl in a-Wide 'shallew stream, Vand a defiecting plate forwardly of, t e'forwazd

